This small active volcano of Kamchatka is different from his other fellow presence of interesting lake poisonous turquoise in the crater. In the continuation of the post in more detail. Such a strange color of the lake due to high content of sulfuric, hydrochloric and hydrofluoric acids, and other compounds. The last eruption was in 1952 - then formed as a result of another small lake, which does not differ in such an unusual color of the water and called the Holy Trinity - the name of the crater in which it appeared. The top of the Lesser Semyachik at around 1560 meters, the volcano itself is composed of three fused together cones that form at the top of a deep hole of the crater diameter of about 700 meters. During the 1994 expedition Volcanological Research helicopter collided with the top of the Small Semyachik, but fortunately there were no casualties and all the members of the expedition, including the pilot, were saved. The average temperature of the lake water is poisonous 30-40 ° C, the diameter is around a mile, and the depth is 140 meters. Volcanoes do not always behave calmly and at times when they wake up, starting a fire unique "show", which often leads to material damage nearby settlements, and in the worst case - and the victims of the local population